Warlock and Cleric I really want to see for exact opposite reasons. Warlock is, imo, the only well designed Class in o5e, so I'm curious to see what changes when there's already actual choice present. Cleric feels like a barren wasteland after level 10 in o5e to me, 11-16 are basically just spells, so really looking forward to seeing some choices in there. Since the playtests are 1-10 only though, Warlock wins for me. Though definitely looking forward to the expanded scope of the Herald.